As a Sport Pilot, do I need a seaplane rating (like SEL) to fly an LSA amphibian?
No. Flying an amphibian LSA does not require an additional seaplane rating; however, you would need a seaplane endorsement. An endorsement is a logbook entry signed by a certified flight instructor (CFI) verifying that you have received the appropriate seaplane training and are qualified to operate an LSA seaplane. This could normally be accomplished in just a few days of additional flight training.
